Add dart2snapshot compiler and dart_snapshotted runtime to test scripts

tools/testing/dart/test_options.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library test_options_parser;
 
 import "dart:io";
 import "drt_updater.dart";
 import "test_suite.dart";
 import "path.dart";
@@ skipping 47 matching lines @@
 
    none: Do not compile the Dart code (run native Dart code on the VM).
          (only valid with the following runtimes: vm, drt)
 
    dart2js: Compile dart code to JavaScript by running dart2js.
          (only valid with the following runtimes: d8, drt, chrome,
          safari, ie9, ie10, ie11, firefox, opera, chromeOnAndroid,
          none (compile only)),
 
    dart2analyzer: Perform static analysis on Dart code by running the analyzer
-          (only valid with the following runtimes: none)''',
+          (only valid with the following runtimes: none)
+
+   dart2snapshot: Compile the Dart code into a snapshot before running the test
+          (only valid with the following runtimes: dart_snapshotted)''',
               ['-c', '--compiler'],
-              ['none', 'precompiler', 'dart2js', 'dart2analyzer'],
+              ['none', 'precompiler', 'dart2js', 'dart2analyzer',
+               'dart2snapshot'],
               'none'),
           // TODO(antonm): fix the option drt.
           new _TestOptionSpecification(
               'runtime',
               '''Where the tests should be run.
     vm: Run Dart code on the standalone dart vm.
 
     dart_precompiled: Run a precompiled snapshot on a variant of the standalone
                       dart vm lacking a JIT.
 
+    dart_snapshotted: Run a full snapshot.
+
     d8: Run JavaScript from the command line using v8.
 
     jsshell: Run JavaScript from the command line using firefox js-shell.
 
     drt: Run Dart or JavaScript in the headless version of Chrome,
          Content shell.
 
     dartium: Run Dart or JavaScript in Dartium.
 
     ContentShellOnAndroid: Run Dart or JavaScript in Dartium content shell
                       on Android.
 
     DartiumOnAndroid: Run Dart or Javascript in Dartium on Android.
 
     [ff | chrome | safari | ie9 | ie10 | ie11 | opera | chromeOnAndroid]:
         Run JavaScript in the specified browser.
 
     none: No runtime, compile only (for example, used for dart2analyzer static
           analysis tests).''',
               ['-r', '--runtime'],
-              ['vm', 'dart_precompiled', 'd8', 'jsshell', 'drt', 'dartium',
+              ['vm', 'dart_precompiled', 'dart_snapshotted',
+               'd8', 'jsshell', 'drt', 'dartium',
                'ff', 'firefox',
                'chrome', 'safari', 'ie9', 'ie10', 'ie11', 'opera',
                'chromeOnAndroid', 'safarimobilesim',
                'ContentShellOnAndroid', 'DartiumOnAndroid', 'none'],
               'vm'),
           new _TestOptionSpecification(
               'arch',
               'The architecture to run tests for',
               ['-a', '--arch'],
               ['all', 'ia32', 'x64', 'arm', 'armv6', 'armv5te', 'arm64', 'mips',
@@ skipping 529 matching lines @@
         // runs test.py -c dart2js -r drt,none the dart2js_none and
         // dart2js_drt will be duplicating work. If later we don't need 'none'
         // with dart2js, we should remove it from here.
         validRuntimes = const ['d8', 'jsshell', 'drt', 'none', 'dartium',
                                'ff', 'chrome', 'safari', 'ie9', 'ie10', 'ie11',
                                'opera', 'chromeOnAndroid', 'safarimobilesim'];
         break;
       case 'dart2analyzer':
         validRuntimes = const ['none'];
         break;
+      case 'dart2snapshot':
+        validRuntimes = const ['dart_snapshotted'];
+        break;
       case 'precompiler':
         validRuntimes = const ['dart_precompiled'];
         break;
       case 'none':
         validRuntimes = const ['vm', 'drt', 'dartium',
                                'ContentShellOnAndroid', 'DartiumOnAndroid'];
         break;
     }
     if (!validRuntimes.contains(config['runtime'])) {
       isValid = false;
@@ skipping 230 matching lines @@
         return option;
       }
     }
     print('Unknown test option $name');
     exit(1);
   }
 
 
   List<_TestOptionSpecification> _options;
 }